SpringRC SM-S4303R Large Continuous Rotation Servo SpringRC SM-S4303R Large Continuous Rotation 360 Degree Plastic Servo for Robot Descriptions: The SpringRC SM-S4303R is one of the few servos designed specifically for continuous rotation. This is a high quality servo and is very popular for robotics applications. As you can see in the pictures, the servo comes with many accessories that make it easy to get your project up and running. JR interface£¬360¡ãwith Robot Servo£¬4plastic gears+1metal gear.double ball bearing. Specifications: Servo Type: Continuous Rotation Speed: 60-70 RPM (4.8V - 6V) Torque: 45.8 oz.in (3.3 kg.cm) - 66.7 oz.in (4.8 kg.cm) (4.8V - 6V) Package size: 6 * 5 * 4cm / 2.4 * 2 * 1.6in Package weight: 60g / 2.1oz Package list: 1 * SpringRC SM-S4303R Servo 1 * Servo arm(bag)